All the following statements about known extrasolar planets are true. Which one came as a surprise to scientists who expected other solar systems to be like ours?
A) Some of the planets orbit their star more closely than Mercury orbits the Sun.
B) Most of the planets are quite massivemuch more like Jupiter than like Earth.
C) Most of the planets orbit stars that are quite nearby compared to the scale of the entire Milky Way Galaxy.
D) In some cases, we've found more than one planet orbiting the same star.
Question 2
How long, approximately, do geologists estimate it takes for the entire seafloor to be replaced due to plate tectonics?
A) 2 million years
B) 20 million years
C) 200 million years
D) 2 billion years
E) longer than the age of the solar system
True Forget-Me-Not
Planets and Their Stars
Location of the Planets Relative to the Sun
Which of the following statements is true of linkage?
Examples of Mission Statements
Terrestrial Planets "الكواكب الأرضية"